Just like with the Jesus Illusion, you'll stare at this picture for 30 seconds and then stare at a blank wall. The wall doesn't have to be white, but we've found it works better with lighter colors. You can also stare at the white space next to the illusion on your computer monitor, or at a blank piece of paper on your desk.
For you to experience the strongest illusion, you'll want to stare at the center of the red plus sign. Don't move your head, and really try not to move your eyes at all. We've found that a plus sign allows your eyes to move ever so slightly, but you should be able to keep them centered.
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